Titanium Grade 2 vs Grade 5 (Ti-6Al-4V): When to Use Each

Titanium Grade 2 (CP) is the cost-effective option with excellent corrosion resistance for chemical processing and marine. Grade 5 (Ti-6Al-4V) offers nearly 3x the strength for aerospace and medical implants where performance justifies the higher cost.

Side-by-Side Property Comparison

PropertyTitanium Grade 2 (CP)Titanium Grade 5 (Ti-6Al-4V)
Tensile Strength345 MPa (50 ksi)950 MPa (138 ksi)
Yield Strength275 MPa (40 ksi)880 MPa (128 ksi)
Hardness200 HV334 HV
Density4.51 g/cm³4.43 g/cm³
Machinability Rating30/10022/100
Thermal Conductivity16.4 W/m·K6.7 W/m·K
Melting Point1,660 °C1,604–1,660 °C
Tolerance±0.01 mm±0.01 mm

Key Differences

PropertyTitanium Grade 2 (CP)Titanium Grade 5 (Ti-6Al-4V)Winner
Tensile Strength345 MPa950 MPaTitanium
Machinability30/10022/100Titanium
Corrosion ResistanceExcellentExcellentTie
Cost~$15/lb~$25/lbTitanium
WeldabilityExcellentGoodTitanium
Fatigue StrengthModerateExcellentTitanium

Which Material Should You Choose?

Choose Titanium Grade 2 (CP) when:

  • Chemical processing equipment
  • Marine and offshore components
  • Heat exchangers
  • Cost-sensitive titanium applications
  • Weldability is important
View Details Titanium Grade 2 (CP)

Choose Titanium Grade 5 (Ti-6Al-4V) when:

  • Aerospace structural components
  • Medical implants (ELI grade)
  • High-stress applications
  • Motorsport components
  • Maximum strength-to-weight ratio
View Details Titanium Grade 5 (Ti-6Al-4V)

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